Life Sciences (XL) 2013 GATE Paper without solution GATE Notes | EduRev

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GATE : Life Sciences (XL) 2013 GATE Paper without solution GATE Notes | EduRev

 Page 1


2013                                                                                                                                                           Life Sciences–  XL 
XL 1/27
XL : LIFE SCIENCES 
Duration: Three Hours        Maximum Marks:100 
 
Please read the following instructions carefully: 
 
General Instructions: 
 
1. Total duration of examination is 180 minutes (3 hours).  
 
2. The clock will be set at the server.  The countdown timer in the top right corner of screen will display 
the remaining time available for you to complete the examination. When the timer reaches zero, the 
examination will end by itself. You will not be required to end or submit your examination.  
 
3. The Question Palette displayed on the right side of screen will show the status of each question using 
one of the following symbols:  
  
 
You have not visited the question yet. 
 
You have not answered the question. 
 
You have answered the question.  
 
You have NOT answered the question, but have marked the 
question for review. 
 
You have answered the question, but marked it for review.  
The Marked for Review status for a question simply indicates that you would like to look at that 
question again. If a question is answered and  Marked for Review, your answer for that question 
will be considered in the evaluation. 
 
Navigating to a Question 
 
4. To answer a question, do the following: 
a. Click on the question number in the Question Palette to go to that question directly.  
b. Select an answer for a multiple choice type question. Use the virtual numeric keypad to enter 
a number as answer for a numerical type question.  
c. Click on Save and Next to save your answer for the current question and then go to the next 
question.  
d. Click on Mark for Review and Next to save your answer for the  current question, mark it 
for review, and then go to the next question. 
e. Caution: Note that your answer for the current question will not be saved, if you 
navigate to another question directly by clicking on its question number.  
5. You can view all the questions by clicking on the Question Paper button. Note that the options for 
multiple choice type questions will not be shown.  
 
Answering a Question 
 
6. Procedure for answering a multiple choice type question: 
a. To select your answer, click on the button of one of  the options 
b. To deselect your chosen answer, click on the button of the chosen option again or click on the 
Clear Response button  
c. To change your chosen answer, click on the button of  another option 
d. To save your answer, you MUST click on the Save and Next button 
e. To mark the question for review, click on the Mark for Review and Next button. If an 
answer is selected for a question that is Marked for Review, that answer will be considered 
in the evaluation. 
Page 2


2013                                                                                                                                                           Life Sciences–  XL 
XL 1/27
XL : LIFE SCIENCES 
Duration: Three Hours        Maximum Marks:100 
 
Please read the following instructions carefully: 
 
General Instructions: 
 
1. Total duration of examination is 180 minutes (3 hours).  
 
2. The clock will be set at the server.  The countdown timer in the top right corner of screen will display 
the remaining time available for you to complete the examination. When the timer reaches zero, the 
examination will end by itself. You will not be required to end or submit your examination.  
 
3. The Question Palette displayed on the right side of screen will show the status of each question using 
one of the following symbols:  
  
 
You have not visited the question yet. 
 
You have not answered the question. 
 
You have answered the question.  
 
You have NOT answered the question, but have marked the 
question for review. 
 
You have answered the question, but marked it for review.  
The Marked for Review status for a question simply indicates that you would like to look at that 
question again. If a question is answered and  Marked for Review, your answer for that question 
will be considered in the evaluation. 
 
Navigating to a Question 
 
4. To answer a question, do the following: 
a. Click on the question number in the Question Palette to go to that question directly.  
b. Select an answer for a multiple choice type question. Use the virtual numeric keypad to enter 
a number as answer for a numerical type question.  
c. Click on Save and Next to save your answer for the current question and then go to the next 
question.  
d. Click on Mark for Review and Next to save your answer for the  current question, mark it 
for review, and then go to the next question. 
e. Caution: Note that your answer for the current question will not be saved, if you 
navigate to another question directly by clicking on its question number.  
5. You can view all the questions by clicking on the Question Paper button. Note that the options for 
multiple choice type questions will not be shown.  
 
Answering a Question 
 
6. Procedure for answering a multiple choice type question: 
a. To select your answer, click on the button of one of  the options 
b. To deselect your chosen answer, click on the button of the chosen option again or click on the 
Clear Response button  
c. To change your chosen answer, click on the button of  another option 
d. To save your answer, you MUST click on the Save and Next button 
e. To mark the question for review, click on the Mark for Review and Next button. If an 
answer is selected for a question that is Marked for Review, that answer will be considered 
in the evaluation. 
2013                                                                                                                                                           Life Sciences–  XL 
XL 2/27
 
7. Procedure for answering a numerical answer type question: 
a. To enter a number as your answer, use the virtual numerical keypad 
b. A fraction (eg.,-0.3 or -.3) can be entered as an answer with or without ‘0’ before the decimal 
point 
c. To clear your answer, click on the Clear Response button 
d. To save your answer, you MUST click on the Save and Next button 
e. To mark the question for review, click on the Mark for Review and Next button. If an 
answer is entered for a question that is Marked for Review, that answer will be considered 
in the evaluation. 
 
8. To change your answer to a question that has already been answered, first select that question for 
answering and then follow the procedure for answering that type of question.  
 
9. Note that ONLY Questions for which answers  are saved or marked for review after answering will be 
considered for evaluation. 
 
Choosing an Optional Section 
 
10. Sections in this question paper are displayed on the top bar of the screen. Questions in a Section can 
be viewed by clicking on the name of that Section. The Section you are currently viewing is 
highlighted. 
 
11. A checkbox is displayed for every optional Section in the Question Paper. To select an optional 
Section for answering, click on the checkbox for that Section.  
 
12. If the checkbox for an optional Section is not selected, the Save and Next button and the Mark for 
Review and Next button will NOT be enabled for that Section.  You will be able to only see 
questions in the Section, but you will not be able to answer questions in the Section.  
 
13. After clicking the Save and Next button for the last question in a Section, you will automatically be 
taken to the first question of the next Section in sequence.  
 
14. You can move the mouse cursor over the name of a Section  to view the answering status for that 
Section.  
 
Changing the Optional Section 
 
15. After answering the chosen optional Sections, partially or completely, you can change an optional 
Section by selecting a checkbox for a new Section that you want to attempt. A warning message will 
appear along with a table showing the number of questions answered in each of the previously chosen 
optional Sections and a checkbox against each of these Sections. Click on a checkbox against a 
Section that you want to reset and then click on the RESET button. Note that RESETTING a 
Section will DELETE all the answers for questions in that Section. Hence, if you think that you 
may want to select this Section again later, you will have to note down your answers for 
questions in that Section. If you do not want to reset any Section and want to continue answering the  
previously chosen optional  Sections, then click on the BACK button.  
 
16. If you deselect the checkbox for an optional Section in the top bar, the following warning message 
will appear:  "Deselecting the checkbox will DELETE all the answers for questions in this Section. 
Do you want to deselect this Section?"  If you want to deselect, click on the RESET button. If you do 
not want to deselect, click on the BACK button.  
 
17. You can shuffle between different Sections any number of times. You can change the optional 
Sections any number of times.  
 
 
Page 3


2013                                                                                                                                                           Life Sciences–  XL 
XL 1/27
XL : LIFE SCIENCES 
Duration: Three Hours        Maximum Marks:100 
 
Please read the following instructions carefully: 
 
General Instructions: 
 
1. Total duration of examination is 180 minutes (3 hours).  
 
2. The clock will be set at the server.  The countdown timer in the top right corner of screen will display 
the remaining time available for you to complete the examination. When the timer reaches zero, the 
examination will end by itself. You will not be required to end or submit your examination.  
 
3. The Question Palette displayed on the right side of screen will show the status of each question using 
one of the following symbols:  
  
 
You have not visited the question yet. 
 
You have not answered the question. 
 
You have answered the question.  
 
You have NOT answered the question, but have marked the 
question for review. 
 
You have answered the question, but marked it for review.  
The Marked for Review status for a question simply indicates that you would like to look at that 
question again. If a question is answered and  Marked for Review, your answer for that question 
will be considered in the evaluation. 
 
Navigating to a Question 
 
4. To answer a question, do the following: 
a. Click on the question number in the Question Palette to go to that question directly.  
b. Select an answer for a multiple choice type question. Use the virtual numeric keypad to enter 
a number as answer for a numerical type question.  
c. Click on Save and Next to save your answer for the current question and then go to the next 
question.  
d. Click on Mark for Review and Next to save your answer for the  current question, mark it 
for review, and then go to the next question. 
e. Caution: Note that your answer for the current question will not be saved, if you 
navigate to another question directly by clicking on its question number.  
5. You can view all the questions by clicking on the Question Paper button. Note that the options for 
multiple choice type questions will not be shown.  
 
Answering a Question 
 
6. Procedure for answering a multiple choice type question: 
a. To select your answer, click on the button of one of  the options 
b. To deselect your chosen answer, click on the button of the chosen option again or click on the 
Clear Response button  
c. To change your chosen answer, click on the button of  another option 
d. To save your answer, you MUST click on the Save and Next button 
e. To mark the question for review, click on the Mark for Review and Next button. If an 
answer is selected for a question that is Marked for Review, that answer will be considered 
in the evaluation. 
2013                                                                                                                                                           Life Sciences–  XL 
XL 2/27
 
7. Procedure for answering a numerical answer type question: 
a. To enter a number as your answer, use the virtual numerical keypad 
b. A fraction (eg.,-0.3 or -.3) can be entered as an answer with or without ‘0’ before the decimal 
point 
c. To clear your answer, click on the Clear Response button 
d. To save your answer, you MUST click on the Save and Next button 
e. To mark the question for review, click on the Mark for Review and Next button. If an 
answer is entered for a question that is Marked for Review, that answer will be considered 
in the evaluation. 
 
8. To change your answer to a question that has already been answered, first select that question for 
answering and then follow the procedure for answering that type of question.  
 
9. Note that ONLY Questions for which answers  are saved or marked for review after answering will be 
considered for evaluation. 
 
Choosing an Optional Section 
 
10. Sections in this question paper are displayed on the top bar of the screen. Questions in a Section can 
be viewed by clicking on the name of that Section. The Section you are currently viewing is 
highlighted. 
 
11. A checkbox is displayed for every optional Section in the Question Paper. To select an optional 
Section for answering, click on the checkbox for that Section.  
 
12. If the checkbox for an optional Section is not selected, the Save and Next button and the Mark for 
Review and Next button will NOT be enabled for that Section.  You will be able to only see 
questions in the Section, but you will not be able to answer questions in the Section.  
 
13. After clicking the Save and Next button for the last question in a Section, you will automatically be 
taken to the first question of the next Section in sequence.  
 
14. You can move the mouse cursor over the name of a Section  to view the answering status for that 
Section.  
 
Changing the Optional Section 
 
15. After answering the chosen optional Sections, partially or completely, you can change an optional 
Section by selecting a checkbox for a new Section that you want to attempt. A warning message will 
appear along with a table showing the number of questions answered in each of the previously chosen 
optional Sections and a checkbox against each of these Sections. Click on a checkbox against a 
Section that you want to reset and then click on the RESET button. Note that RESETTING a 
Section will DELETE all the answers for questions in that Section. Hence, if you think that you 
may want to select this Section again later, you will have to note down your answers for 
questions in that Section. If you do not want to reset any Section and want to continue answering the  
previously chosen optional  Sections, then click on the BACK button.  
 
16. If you deselect the checkbox for an optional Section in the top bar, the following warning message 
will appear:  "Deselecting the checkbox will DELETE all the answers for questions in this Section. 
Do you want to deselect this Section?"  If you want to deselect, click on the RESET button. If you do 
not want to deselect, click on the BACK button.  
 
17. You can shuffle between different Sections any number of times. You can change the optional 
Sections any number of times.  
 
 
2013                                                                                                                                                           Life Sciences–  XL 
XL 3/27
Paper specific instructions: 
 
 
1. There are a total of 65 questions carrying 100 marks. The question paper consists of questions of 
multiple choice type and numerical answer type. Multiple choice type questions will have four 
choices for the answer with only one correct choice. For numerical answer type questions, the answer 
is a number and no choices will be given. A number as the answer should be entered using the 
virtual keyboard on the monitor. 
 
2. There are Seven sections: GA (General Aptitude), H (Chemistry), I (Biochemistry), J (Botany), K 
(Microbiology), L (Zoology) and M (Food Technology). 
 
3. Section GA (General Aptitude) and Section H (Chemistry) are compulsory. Attempt any two optional 
Sections I through M.  
 
4. There are 10 questions carrying 15 marks in General Aptitude (GA) section, which is compulsory. 
Questions Q.1 – Q.5 carry 1 mark each, and questions Q.6 – Q.10 carry 2 marks each. 
 
5. There are 15 questions carrying 25 marks in Section H (Chemistry), which is compulsory. Questions 
Q.1 - Q.5 carry 1 mark each and questions Q.6- Q.15 carry 2 marks each. The 2 marks questions 
include one pair of common data questions and one pair of linked answer questions.  The answer to 
the second question of the linked answer questions depends on the answer to the first question of the 
pair. If the first question in the linked pair is wrongly answered or is not attempted, then the answer to 
the second question in the pair will not be evaluated. 
 
6. Each of the other sections (Sections I through M) contains 20 questions carrying 30 marks. Questions 
Q.1 - Q.10 carry 1 mark each and questions Q.11 - Q.20 carry 2 marks each. 
 
7. Questions not attempted will result in zero mark. Wrong answers for multiple choice type questions 
will result in NEGATIVE marks.  For all 1 mark questions, ? mark will be deducted for each wrong 
answer. For all 2 marks questions, ? mark will be deducted for each wrong answer.  However, in the 
case of the linked answer question pair, there will be negative marks only for wrong answer to the 
first question and no negative marks for wrong answer to the second question. There is no negative 
marking for questions of numerical answer type. 
 
8. Calculator is allowed. Charts, graph sheets or tables are NOT allowed in the examination hall.  
 
9. Do the rough work in the Scribble Pad provided. 
 
  
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